From the principle of shortwave imaging, SWIR cameras(shortwave infrared cameras) can detect the chemical composition and physical state of solids or liquids.

In liquid composition detection, SWIR cameras distinguish different components and measure their concentrations by measuring the absorption characteristics of different chemical components in the liquid.

When shortwave infrared radiation irradiates a liquid sample, various components in the liquid absorb light of different wavelengths, forming recognizable light infrared cameras that analyze these spectral information to determine the composition and concentration of the liquid.

The use of SWIR cameras to detect liquid components has the advantages of high accuracy, speed, and non-contact.

Let me show you a set of live photos taken by us. The desktop is a bit messy, please ignore it. On the left is board washing water, and on the right is mineral water. And we used a SWIR illuminator . It can distinguish target components very well.